| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] what for | 9 |
|
| 2 | do what for | 9 |
|
| 3 | [vb base] what for | 7 |
|
| 4 | [to-vb] what for | 7 |
|
| 5 | [vb -s] what for | 7 |
|
| 6 | know what for | 6 |
|
| 7 | [vb past] what for | 5 |
|
